Description
Overview:
These 5/8 in (15.88 mm) UNC steel nuts are durable, general-purpose fasteners for building, repair and maintenance tasks across construction equipment, garden machinery and workshop projects. Made from strong steel with a bright zinc-plated finish, they provide dependable clamping force and improved resistance to rust in typical UK conditions. The standard six-sided profile gives a secure grip with common spanners and socket sets, making them straightforward to fit and remove. Sized to suit 5/8 in (15.88 mm) UNC bolts and threaded studs, they are suitable for frames, guards, brackets and engine-mounted components. Supplied in a bulk pack of 50 under MPN 903 0556, they are a practical choice for stocking up your kit so you have matching nuts ready for assemblies and replacements.
Key Features:
- 5/8 in (15.88 mm) UNC coarse thread to suit compatible bolts, studs and threaded rod
- Steel construction provides reliable strength for high clamping loads
- Bright zinc plating for corrosion resistance and long service life
- Six-sided form for positive drive with standard spanners and socket sets
- Clean, consistent threads for smooth start and reliable tightening
- Pack of 50 for covering multiple fixings and keeping spares on hand
- Suitable for construction plant, garden machinery and general fabrications
- Works well with flat or spring washers and threadlocking compounds where required
- MPN: 903 0556 for easy identification and reordering
Typical Applications:
Securing brackets, guards, frames, plates and fixtures on mowers, chippers, generators, compactors and site equipment. Useful for steel fabrications, repair work, mounting accessories, assembling jigs, and general workshop fastening where a 5/8 in (15.88 mm) UNC nut is specified.
Also known as:
Hex nuts, 5/8-11 UNC nuts, coarse-thread nuts, full nuts, BZP nuts, zinc-plated steel nuts, standard pattern nuts, UNC fastening nuts.
Product Specifications
| L&S Part No. | 903 0556 |
|---|---|
| Unit of Sale | Pack of 50 |
| Size | 5/8" |
| Key Features | - 5/8 in (15.88 mm) UNC coarse thread for compatible bolts - Steel construction for high clamping loads - Bright zinc plating resists corrosion - Six-sided form fits standard spanners - Pack of 50 for multiple fixings |


